CPV code 90712400 designates Natural resources management or conservation strategy planning services in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
90712400 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 90712000 (Environmental planning).